The revised procedures would allow judges to deny claims to entire groups of people without ever giving them court hearings.
"It breaks my heart...They raised their expectations only to then leave them terribly disappointed," said CBP Florida spokesperson Michael Silva.
"As these numbers indicate, construction of hundreds of more miles of border wall would not address the challenge of irregular migration into our country. Far from it," said the Center for Migration Studies's executive director.
The Oakland mayor alerted illegal immigrants about impending ICE raids last year.
The 1882 law portrayed Chinese immigrants as "unassimilable."
The Southern Poverty Law Center announced the lawsuit on Monday.
Responses to a recent Gallup Poll are almost the exact opposite of the responses in 2005.